#coding=utf-8
from django.shortcuts import render
from django.views.generic import View
from .models import CourseOrg,CityDict
from pure_pagination import Paginator, EmptyPage, PageNotAnInteger
from .forms import UserAskForm
from django.http import HttpResponse
from operation.models import UserFavorite
from courses.models import Course,Teacher
from django.db.models import Q


# Create your views here.
class OrgView(View):
    def get(self,request):
        # 机构
        all_orgs=CourseOrg.objects.all()
        # 热门排行
        hot_orgs=all_orgs.order_by("-click_nums")[:3]
        # 城市
        all_citys=CityDict.objects.all()
        # 机构搜索
        search_keywords = request.GET.get('keywords', '')
        if search_keywords:
            all_orgs = all_orgs.filter(
                Q(name__icontains=search_keywords) | Q(desc__icontains=search_keywords))

        # 机构类别筛选
        category = request.GET.get("ct", "")
        if category :
            all_orgs = all_orgs.filter(category=category)
         # 排序
        sort= request.GET.get("sort", "")
        if sort:
            if sort=="students":
                all_orgs=all_orgs.order_by("-students")
            elif sort=="courses":
                all_orgs=all_orgs.order_by("-course_nums")
        # 筛选城市
        city_id = request.GET.get("city", "")
        if city_id:
            all_orgs=all_orgs.filter(city_id=int(city_id))
        all_nums = all_orgs.count()
        # 对课程机构分页
        try:
            page = request.GET.get('page', 1)
        except PageNotAnInteger:
            page = 1
        # Provide Paginator with the request object for complete querystring generatio
        p = Paginator(all_orgs,3,request=request)
        orgs = p.page(page)
        return render(request,"org-list.html",{
            "all_orgs":orgs,
            "all_citys":all_citys,
            "all_nums":all_nums,
            "city_id":city_id,
            "category":category,
            "hot_orgs":hot_orgs,
            "sort":sort
        })
class OrgHomeView(View):
    # 机构首页
    def get(self,request,org_id):
        current_page="home"
        course_org=CourseOrg.objects.get(id=int(org_id))
        course_org.click_nums+=1
        course_org.save()
        has_fav=False
        if request.user.is_authenticated():
            if UserFavorite.objects.filter(user=request.user,fav_id=course_org.id,fav_type=2):
                has_fav = True
        all_courses=course_org.course_set.all()[:3]
        all_teachers=course_org.course_set.all()[:1]
        return render(request,"org-detail-homepage.html",{
            "all_courses":all_courses,
            "all_teachers":all_teachers,
            "course_org":course_org,
            "current_page":current_page,
            "has_fav":has_fav
        })

class OrgCourseView(View):
    # 机构课程列表页
    def get(self,request,org_id):
        current_page = "course"
        course_org=CourseOrg.objects.get(id=int(org_id))
        has_fav = False
        if request.user.is_authenticated():
            if UserFavorite.objects.filter(user=request.user, fav_id=course_org.id, fav_type=2):
                has_fav = True
        all_courses=course_org.course_set.all()[:3]
        return render(request,"org-detail-course.html",{
            "all_courses":all_courses,
            "course_org":course_org,
            "current_page": current_page,
            "has_fav ":has_fav

        })


class OrgDescView(View):
    # 机构介绍列表页
    def get(self,request,org_id):
        current_page = "desc"
        course_org=CourseOrg.objects.get(id=int(org_id))
        has_fav = False
        if request.user.is_authenticated():
            if UserFavorite.objects.filter(user=request.user, fav_id=course_org.id, fav_type=2):
                has_fav = True
        return render(request,"org-detail-desc.html",{
            "course_org":course_org,
            "current_page": current_page,
            "has_fav ":has_fav
        })

class OrgTeacherView(View):
    # 机构教师列表页
    def get(self,request,org_id):
        current_page = "teacher"
        course_org = CourseOrg.objects.get(id=int(org_id))
        has_fav = False
        if request.user.is_authenticated():
            if UserFavorite.objects.filter(user=request.user, fav_id=course_org.id, fav_type=2):
                has_fav = True
        all_teachers=course_org.teacher_set.all()
        return render(request,"org-detail-teachers.html",{
            "all_teachers":all_teachers,
            "course_org":course_org,
            "current_page": current_page,
            "has_fav":has_fav
        })



class AddFavView(View):
    # 用户收藏 点赞
    def post(self,request):
        fav_id=request.POST.get("fav_id",0)
        fav_type = request.POST.get("fav_type", 0)
        if not request.user.is_authenticated():
            # 判断用户登录状态
            return HttpResponse('{"status":"fail","msg":"用户未登录"}', content_type='application/json')
        exist_records=UserFavorite.objects.filter(user=request.user,fav_id=int(fav_id),fav_type=int(fav_type))
        if exist_records:
            # 如果记录在 表示取消收藏
            exist_records.delete()
            if int(fav_type) == 1:
                course=Course.objects.get(id=int(fav_id))
                course.fav_nums-=1
                if course.fav_nums < 0:
                    course.fav_nums = 0
                course.save()
            elif int(fav_type) == 2:
                course_org=Course.objects.get(id=int(fav_id))
                course_org.fav_nums-=1
                if course_org.fav_nums < 0:
                    course_org.fav_nums = 0
                course_org.save()
            elif int(fav_type) == 3:
                teacher = Teacher.objects.get(id=int(fav_id))
                teacher.fav_nums -= 1
                if teacher.fav_nums < 0:
                    teacher.fav_nums = 0
                teacher.save()


            return HttpResponse('{"status":"success","msg":"收藏"}', content_type='application/json')
        else:
            user_fav=UserFavorite()
            if int(fav_id)>0 and int(fav_type)>0:
                user_fav.user=request.user
                user_fav.fav_id = int(fav_id)
                user_fav.fav_type=int(fav_type)
                user_fav.save()
                if int(fav_type) == 1:
                    course = Course.objects.get(id=int(fav_id))
                    course.fav_nums += 1
                    course.save()
                elif int(fav_type) == 2:
                    course_org = Course.objects.get(id=int(fav_id))
                    course_org.fav_nums += 1
                    course_org.save()
                elif int(fav_type) == 3:
                    teacher = Teacher.objects.get(id=int(fav_id))
                    teacher.fav_nums += 1
                    teacher.save()


                return HttpResponse('{"status":"success","msg":"已收藏"}', content_type='application/json')
            else:
                return HttpResponse('{"status":"fail","msg":"收藏出错"}', content_type='application/json')



class AddUserAskView(View):
    # 用户添加咨询
    def post(self,request):
        userask_form=UserAskForm(request.POST)
        if userask_form.is_valid():

            user_ask=userask_form.save(commit=True)
            return HttpResponse('{"status":"success"}',content_type='application/json')
        else:
            return HttpResponse('{"status":"fail","msg":"添加出错"}',content_type ='application/json')

class TeacherListView(View):
    # 课程讲师列表页
    def get(self,request):
        all_teachers=Teacher.objects.all()
        current_nav='teacher'
        # 授课教师搜索
        search_keywords = request.GET.get('keywords', '')
        if search_keywords:
            all_teachers = all_teachers.filter(
                Q(name__icontains=search_keywords) | Q(work_company__icontains=search_keywords)|Q(work_position__icontains=search_keywords))
        # 排序
        sort = request.GET.get("sort", "")
        if sort:
            if sort == "hot":
                all_teachers = all_teachers.order_by("-click_nums")
        sorted_teacher=Teacher.objects.all().order_by("-click_nums")[:3]
        # 对讲师进行分页
        try:
            page = request.GET.get('page', 1)
        except PageNotAnInteger:
            page = 1
        # Provide Paginator with the request object for complete querystring generatio
        p = Paginator(all_teachers, 2, request=request)
        teachers= p.page(page)

        return render(request,"teachers-list.html",{
            "all_teachers":teachers,
            "sorted_teacher":sorted_teacher,
            "sort":sort,
            "current_nav":current_nav

        })




class TeacherDetailView(View):
    # 讲师详情页
    def get(self,request,teacher_id):
        teacher=Teacher.objects.get(id=int(teacher_id))
        teacher.click_nums+=1
        teacher.save()
        all_course=Course.objects.filter(teacher=teacher)

        has_teacher_faved=False
        has_org_faved=False
        if UserFavorite.objects.filter(user=request.user,fav_type=3,fav_id=teacher.id):
            has_teacher_faved = True
        if UserFavorite.objects.filter(user=request.user, fav_type=2, fav_id=teacher.org.id):
            has_org_faved = True
        # 讲师排行
        sorted_teacher = Teacher.objects.all().order_by("-click_nums")[:3]
        return render(request,"teacher-detail.html",{
            "teacher":teacher,
            "all_course":all_course,
            "sorted_teacher":sorted_teacher,
            "has_teacher_faved":has_teacher_faved,
            "has_org_faved":has_org_faved

        })









